Add section on NAT
Incorporate sample network into NAT section
0.1 of the Disaster Recovery Section

Work in progress
Update disaster_recovery.rst
Updated to match @miketheman's feedback

Corrections have been made to comply with the style guide. Also added a bit of explanation about why preparation and planning are key-aspects of Disaster Recovery.
Added myself to the list aswell
Formatting cleanup
Don't pollute with additional content
Add Cron Output Section

Many of us have been bit by cron's silent failures, only to find out that our jobs haven't
been running for hours, or worse, days. Cron's output, though great in theory, isn't as
reliable or as helpful as it could be. Our team has made sure to include this common
"pitfall" in our teaching sessions and thought it would serve nicely here as well. Feedback
appreciated!
Fix syntax error
Fix indents
Added section on Create Tables, Alter Tables, Drop Tables and Data types
Merge pull request #225 from tomc603/tomc603-network201-formatting

networking_201.rst formatting
fixing formatting issues
Merge pull request #224 from spncr2/master

Add Cron Output Section
Additional updates

Additional updates to comply with @MikeTheMan's feedback.
Edited.
Merge pull request #219 from modermodem/patch-1

Added some basic Disaster Recovery-information
Typos in logs_101.rst
Merge pull request #232 from nfelger/patch-1

Typos in logs_101.rst